In order to improve the internal quality of E36 steel slab in a steel plant

a mathematical model of the solidification process of E36 steel slab is established through ProCAST software

and on this basis

the CAFE module is used to simulate the solidification structure of 300 mm x 2 070 mm the cast slab with the superheat 10 ~ 25 ℃.

casting speed 0. 70 ~ 0. 85 m/min and secondary cooling ratio 0. 30 ~ 0. 39 L/kg different process parameters as well as adding EMS are studied. From the simulation results

it can be seen that for every 10 ℃. increase in superheat

the proportion of equiaxed crystal regions decreases by 3%. As the degree of superheat increases

columnar crystal regions increase

equiaxed crystal regions decrease. The installation of electromagnetic stirring in the second cold zone increases the equiaxed crystal zone and reduces the average crystal grain radius. According to the simulation results

the process is optimized

and the superheat is reduced from 15 to 10 ℃. By comparing the low magnification structure of the cast slab before and after the optimization

it can be seen that the equiaxed crystal zone of the cast slab is significantly enlarged

and the center segregation is effectively improved.